Cops breaking up a brawl at a Brooklyn club early yesterday wounded one man — and then shot and killed a bouncer who once served as a bodyguard for the likes of Jay-Z, Mariah Carey and P. Diddy.

A spat over a spilled drink escalated at the Norwood Palace in Cypress Hills at around 3 a.m., with patrons striking each other with anything at hand and then firing off several rounds.

“Chairs and bar stools were flying all over the place,” said house DJ Timothy Stokes. “Then some shots went off.”

Two nearby plainclothes cops confronted patron Donovan Wilson, 19, outside the club as he fired at a bouncer wearing a bulletproof vest, said Police Commissioner Ray Kelly.

When Wilson turned toward them, they yelled, “Police! Don’t move!” and shot him in the elbow and hip when he didn’t follow their orders, Kelly said.

Then, hearing a shot from inside the club, cops rushed in to find a second bouncer, Kevin White, 43, holding a gun. “[They] screamed at him several times to drop the weapon, and he did not,” Stokes said.

White, whose rap sheet included five arrests for weapon possession, was fatally shot in the neck.

A police source said surveillance video showed he was shooting at the cops.

But relatives, who said he’d worked with rap and pop royalty, insisted he had just wrested the gun away from a patron.

His brother, Louis, a nurse, said, “My brother would never carry a gun”